Rosatom will close the Plant-20 metallurgical plan at Mayak and move all metal processing of metal weapon-grade materials to Seversk. The plan is to complete the transfer by 2014.

Plant-20 has been involved in production of metal plutonium and HEU and in manufacturing of metal components of nuclear weapons. It has also been taking part in HEU-LEU program (conversion of HEU metal to uranium dioxide).